fix(docs): fix snippets, integrate navigations to ToC and core concepts (#1884)

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Dmitry Gozman 2020-04-20 14:04:49 -07:00 committed by GitHub
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6 changed files with 92 additions and 69 deletions

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@ -34,6 +34,11 @@
1. Scraping and verification
- Screenshots
- Evaluation
1. [Navigation and loading](./loading.md)
- [Common scenarios](./loading.md#common-scenarios)
- [Loading a popup](./loading.md#loading-a-popup)
- [Client-side redirects](./loading.md#unusual-client-side-redirects)
- [Navigation after a timeout](./loading.md#click-triggers-navigation-after-a-timeout)
1. [Continuous integration](./ci.md)
- [Docker](./ci.md#docker)
- [GitHub Actions](./ci.md#github-actions)
@ -46,8 +51,7 @@
- Mocha
- Karma
- Jasmine
- Jasmine
- Storybooks
1. [Extensibility](./extensibility.md)
- [Custom selector engines](./extensibility.md#custom-selector-engines)
1. [API Reference](./api.md)

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@ -54,7 +54,7 @@ const context = await browser.newContext();
```
Browser contexts can also be used to emulate multi-page scenarios involving
mobile devices, permissions, locale and color scheme.
mobile devices, permissions, locale and color scheme.
```js
const { devices } = require('playwright');
@ -78,13 +78,30 @@ const context = await browser.newContext({
## Pages and frames
A Browser context can have multiple pages. A [`Page`](../api.md#class-page)
refers to a single tab or a popup window within a browser context. A page can be used to navigate
to URLs and then interact with elements.
refers to a single tab or a popup window within a browser context. It should be used to navigate to URLs and interact with the page content.
```js
// Create a page.
const page = await context.newPage();
```
```js
// Navigate explicitly, similar to entering a URL in the browser.
await page.goto('http://example.com');
// Fill an input.
await page.fill('#search', 'query');
```
```js
// Navigate implicitly by clicking a link.
await page.click('#submit');
// Expect a new url.
console.log(page.url());
```
```js
// Page can navigate from the script - this will be picked up by Playwright.
window.location.href = 'https://example.com';
```
A page can have one or more [Frame](../api.md#class-frame) objects attached to
@ -105,6 +122,8 @@ await frame.fill('#username-input', 'John');
- [class `Page`](./api.md#class-page)
- [class `Frame`](./api.md#class-frame)
To learn more about navigation and loading, read [this document](loading.md).
<br/>
## Selectors

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@ -22,9 +22,9 @@ Most of these parameters are configured during the browser context construction,
## User agent
```js
const context = await browser.newContext({
userAgent: 'My user agent'
});
const context = await browser.newContext({
userAgent: 'My user agent'
});
```
All pages created in the context above will share the user agent specified.
@ -40,44 +40,43 @@ All pages created in the context above will share the user agent specified.
Create a context with custom viewport size:
```js
const context = await browser.newContext({
viewport: {
width: 1280,
height: 1024
}
});
const context = await browser.newContext({
viewport: {
width: 1280,
height: 1024
}
});
```
Resize viewport for individual pages:
```js
await page.setViewportSize({ 'width': 1600, 'height': 1200 });
await page.setViewportSize({ 'width': 1600, 'height': 1200 });
```
Emulate desktop device with the high-DPI screen and touch support:
```js
const context = await browser.newContext({
viewport: {
width: 2560,
height: 1440,
},
deviceScaleFactor: 2,
hasTouch: true
});
const context = await browser.newContext({
viewport: {
width: 2560,
height: 1440,
},
deviceScaleFactor: 2,
hasTouch: true
});
```
Create device with the dark color scheme:
```js
const context = await browser.newContext({
colorScheme: 'dark'
});
const context = await browser.newContext({
colorScheme: 'dark'
});
```
Change color scheme for individual pages:
```js
await page.emulateMedia({ colorScheme: 'dark' });
await page.emulateMedia({ colorScheme: 'dark' });
```
#### API reference
@ -93,13 +92,13 @@ Change color scheme for individual pages:
Playwright comes with a registry of device parameters for selected mobile devices. It can be used to simulate browser behavior on a mobile device:
```js
const { chromium, devices } = require('playwright');
const browser = await chromium.launch();
const { chromium, devices } = require('playwright');
const browser = await chromium.launch();
const pixel2 = devices['Pixel 2'];
const context = await browser.newContext({
...pixel2,
});
const pixel2 = devices['Pixel 2'];
const context = await browser.newContext({
...pixel2,
});
```
All pages created in the context above will share the same device parameters.
@ -114,10 +113,10 @@ All pages created in the context above will share the same device parameters.
## Locale & timezone
```js
const context = await browser.newContext({
locale: 'de-DE',
timezoneId: 'Europe/Berlin',
});
const context = await browser.newContext({
locale: 'de-DE',
timezoneId: 'Europe/Berlin',
});
```
#### API reference
@ -130,23 +129,24 @@ All pages created in the context above will share the same device parameters.
Allow all pages in the context to show system notifications:
```js
const context = await browser.newContext({
permissions: ['notifications'],
});
const context = await browser.newContext({
permissions: ['notifications'],
});
```
Grant all pages in the existing context access to current location:
```js
await context.grantPermissions(['geolocation']);
await context.grantPermissions(['geolocation']);
```
Grant notifications access from a specific domain:
```js
await context.grantPermissions(['notifications'], {origin: 'https://skype.com'} );
await context.grantPermissions(['notifications'], {origin: 'https://skype.com'} );
```
Revoke all permissions:
```js
await context.clearPermissions();
await context.clearPermissions();
```
#### API reference
@ -160,16 +160,17 @@ Revoke all permissions:
## Geolocation
Create a context with `"geolocation"` permissions granted:
```js
const context = await browser.newContext({
geolocation: { longitude: 48.858455, latitude: 2.294474 },
permissions: ['geolocation']
});
const context = await browser.newContext({
geolocation: { longitude: 48.858455, latitude: 2.294474 },
permissions: ['geolocation']
});
```
Change the location later:
```js
await context.setGeolocation({ longitude: 29.979097, latitude: 31.134256 };
await context.setGeolocation({ longitude: 29.979097, latitude: 31.134256 };
```
**Note** you can only change geolocation for all pages in the context.
#### API reference

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@ -31,7 +31,6 @@ await page.fill('#time', '13-15');
// <input id=local type=datetime-local>
await page.fill('#local', '2020-03-02T05:15');
```
#### API reference
@ -131,7 +130,7 @@ await page.dblclick('#item');
await page.click('#item', { button: 'right' });
// Shift click element
await page.click('#item', { modifiers: 'Shift' });
await page.click('#item', { modifiers: ['Shift'] });
// Hover over element without clicking
await page.hover('#item');

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@ -8,23 +8,23 @@ Page navigation can be either initiated by the Playwright call:
```js
// Load a page
await page.goto('https://example.com')
await page.goto('https://example.com');
// Reload a page
await page.reload()
await page.reload();
// Click a link
await page.click('text="Continue"')
await page.click('text="Continue"');
```
or by the page itself:
```js
// Programmatic navigation
window.location.href = 'https://example.com'
window.location.href = 'https://example.com';
// Single page app navigation
history.pushState({}, 'title', '#deep-link')
history.pushState({}, 'title', '#deep-link');
```
Navigation intent may result in being canceled, for example transformed into a download or hitting an unresolved DNS address. Only when the navigation succeeds, page starts **loading** the document.
@ -66,9 +66,9 @@ Explicit loading handling may be required for more complicated scenarios though.
When popup is opened, explicitly calling [`page.waitForLoadState()`](#pagewaitforloadstatestate-options) ensures that popup is loaded to the desired state.
```js
const { popup } = await Promise.all([
const [ popup ] = await Promise.all([
page.waitForEvent('popup'),
page.click('a[target="_blank"]') // <-- opens popup
page.click('a[target="_blank"]'), // <-- opens popup
]);
await popup.waitForLoadState('load');
await popup.evaluate(() => window.globalVariableInitializedByOnLoadHandler);

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@ -24,7 +24,7 @@ const context = await browser.newContext({
},
});
const page = await context.newPage();
awat page.goto('https://example.com');
await page.goto('https://example.com');
```
You can also use [`browserContext.setHTTPCredentials`](./api.md#browsercontextsethttpcredentialshttpcredentials) to update HTTP credentials of an existing context.
@ -77,7 +77,7 @@ const { chromium, webkit, firefox } = require('playwright');
const browser = await chromium.launch();
const page = await browser.newPage();
// Subscribe to 'request' and 'response' events.S
// Subscribe to 'request' and 'response' events.
page.on('request', request =>
console.log('>>', request.method(), request.url()));
page.on('response', response =>
@ -91,8 +91,9 @@ const { chromium, webkit, firefox } = require('playwright');
Or wait for a network response after the button click:
```js
// Use a glob URL pattern
const [response] = await Promise.all([
page.waitForResponse('/api/fetch_data'),
page.waitForResponse('**/api/fetch_data'),
page.click('button#update'),
]);
```
@ -100,15 +101,15 @@ const [response] = await Promise.all([
#### Variations
```js
// User glob URL pattern
// Use a RegExp
const [response] = await Promise.all([
page.waitForResponse('**/*'),
page.waitForResponse(/\.jpeg$/),
page.click('button#update'),
]);
// User pattern predicate
// Use a predicate taking a Response object
const [response] = await Promise.all([
page.waitForResponse(url => url.includes(token)),
page.waitForResponse(response => response.url().includes(token)),
page.click('button#update'),
]);
```
@ -129,7 +130,7 @@ const [response] = await Promise.all([
You can mock API endpoints via handling the network quests in your Playwright script.
```js
await page.route('/api/fetch_data', route => route.fulfill({
await page.route('**/api/fetch_data', route => route.fulfill({
status: 200,
body: testData,
}));
@ -142,7 +143,7 @@ await page.goto('https://example.com');
// Set up route on the entire browser context.
// It will apply to popup windows and opened links.
await browserContext.route('/api/login', route => route.fulfill({
await browserContext.route('**/api/login', route => route.fulfill({
status: 200,
body: 'accept',
}));
@ -177,8 +178,7 @@ You can continue requests with modifications. Example above removes an HTTP head
```js
// Continue requests as POST.
await page.route('**/*', route =>
route.continue({method: 'POST'}));
await page.route('**/*', route => route.continue({method: 'POST'}));
await page.goto('https://chromium.org');
```